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Finding the Fourth Proportional to 16,669,093.80, 25,003,640.70 and 12,687,781.80

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Solution

The fourth proportional to 16,669,093.80, 25,003,640.70 and 12,687,781.80 is: 19,031,672.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,669,093.80 : 25,003,640.70 = 12,687,781.80 : x
  2. Step 2: Convert to fraction form
    16,669,093.80/25,003,640.70 = 12,687,781.80/x
  3. Step 3: Cross multiply
    16,669,093.80x = 25,003,640.70 × 12,687,781.80
  4. Step 4: Simplify right side
    16,669,093.80x = 317,240,737,407,199.25
  5. Step 5: Solve for x
    x = 317,240,737,407,199.25/16,669,093.80
  6. Step 6: Final answer
    x = 19,031,672.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.